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. 2024 Sep 3;146(36):24754–24758. doi: 10.1021/jacs.4c08241

Figure 1.

Figure 1

Polarization transfer from hyperpolarized water to 9.1 mM, 9.6 mM, and 9.1 mM benzamidine, employing J-CP, NOE, and INEPT, at pH 7.25. The injection of hyperpolarized water was followed by τmix = 500 ms, 15 s, and 500 ms, respectively. J-CP used τCP = 160 ms, γB1 = 3125 Hz, ωN = 105 ppm, and ωH = 8 ppm. Refocused INEPT included τ1 = 1/(4JHN), τ2 = 1/(6JHN), and JHN = 92 Hz. Non-hyperpolarized experiments were performed with a sample from a previous hyperpolarized experiment containing 9.08 mM benzamidine, in 400 scans. The vertical scale is reduced by 4001/2 to match noise levels.